:root {
    --app-sidebar-width: 272px;
    --app-bg: #f3f5fb;
    --app-surface: #ffffff;
    --app-border: #e4e8f2;
    --app-primary: #4f46e5;
    --app-primary-strong: #3730a3;
    --app-primary-soft: #eef0fe;
    --app-accent: #14b8a6;
    --app-danger: #e11d48;
    --app-warning: #d97706;
    --app-text: #1a1d29;
    --app-muted: #6b7280;
    --app-radius-lg: 18px;
    --app-radius-md: 14px;
    --app-radius-sm: 10px;
    --app-shadow: 0 8px 24px rgba(31, 41, 55, .06);
    --app-shadow-sm: 0 2px 8px rgba(31, 41, 55, .05);
    --app-transition: .16s cubic-bezier(.4, 0, .2, 1);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--app-bg);
    color: var(--app-text);
    font-feature-settings: "cv02", "cv03", "cv04", "cv11";
}

::selection {
    background: var(--app-primary);
    color: #fff;
}

/* ---------- Auth ---------- */

.auth-body {
    background: radial-gradient(circle at 18% 20%, rgba(79, 70, 229, .16), transparent 45%),
        radial-gradient(circle at 82% 78%, rgba(20, 184, 166, .14), transparent 45%),
        var(--app-bg);
}

.auth-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: var(--app-primary-soft);
    color: var(--app-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.auth-icon,
.app-sidebar .brand-icon {
    position: relative;
    overflow: hidden;
    isolation: isolate;
}

.auth-icon::before,
.app-sidebar .brand-icon::before {
    content: "";
    position: absolute;
    inset: -35%;
    background: conic-gradient(from 180deg, rgba(79, 70, 229, 0) 0deg, rgba(79, 70, 229, .95) 90deg, rgba(20, 184, 166, .95) 180deg, rgba(79, 70, 229, 0) 270deg, rgba(79, 70, 229, 0) 360deg);
    animation: ai-logo-sweep 4.8s linear infinite;
    opacity: .55;
    filter: blur(4px);
    z-index: 0;
}

.auth-icon::after,
.app-sidebar .brand-icon::after {
    content: "";
    position: absolute;
    inset: 3px;
    border-radius: inherit;
    background: radial-gradient(circle at 50% 40%, rgba(255, 255, 255, .45), rgba(255, 255, 255, 0) 58%), linear-gradient(145deg, rgba(255, 255, 255, .18), rgba(255, 255, 255, 0));
    opacity: .45;
    animation: ai-logo-glow 2.6s ease-in-out infinite;
    z-index: 0;
}

.auth-icon > *,
.app-sidebar .brand-icon > * {
    position: relative;
    z-index: 1;
}

/* ---------- Animated AI logo ---------- */

.ai-logo {
    overflow: visible;
    filter: drop-shadow(0 0 9px rgba(79, 70, 229, .24)) drop-shadow(0 0 18px rgba(20, 184, 166, .14));
    animation: ai-logo-float 3.4s ease-in-out infinite;
}

.ai-logo-halo {
    transform-origin: 20px 20px;
    animation: ai-logo-halo 4.8s ease-in-out infinite;
}

.ai-logo-orbit,
.ai-logo-ring,
.ai-logo-nodes,
.ai-logo-sparks {
    transform-origin: 20px 20px;
    animation: ai-logo-spin 7s linear infinite;
}

.ai-logo-orbit {
    animation-direction: reverse;
    animation-duration: 11s;
    opacity: .55;
}

.ai-logo-ring-2 {
    animation-direction: reverse;
    animation-duration: 16s;
    opacity: .78;
}

.ai-logo-sparks {
    animation-duration: 13s;
    opacity: .8;
}

.ai-logo-sparks circle {
    animation: ai-logo-spark 1.9s ease-in-out infinite;
}

.ai-logo-sparks circle:nth-child(2) { animation-delay: .35s; }
.ai-logo-sparks circle:nth-child(3) { animation-delay: .7s; }
.ai-logo-sparks circle:nth-child(4) { animation-delay: 1.05s; }

.ai-logo-core {
    transform-origin: 20px 20px;
    animation: ai-logo-pulse 2.2s ease-in-out infinite;
}

@keyframes ai-logo-float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-2px) scale(1.02); }
}

@keyframes ai-logo-halo {
    0%, 100% { transform: scale(1); opacity: .28; }
    50% { transform: scale(1.12); opacity: .52; }
}

@keyframes ai-logo-sweep {
    to { transform: rotate(360deg); }
}

@keyframes ai-logo-spark {
    0%, 100% { transform: scale(.72); opacity: .45; }
    50% { transform: scale(1.35); opacity: 1; }
}

@keyframes ai-logo-glow {
    0%, 100% { opacity: .28; transform: scale(1); }
    50% { opacity: .78; transform: scale(1.02); }
}

@keyframes ai-logo-spin {
    to { transform: rotate(360deg); }
}

@keyframes ai-logo-pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.18); opacity: .82; }
}

@media (prefers-reduced-motion: reduce) {
    .auth-icon::before,
    .auth-icon::after,
    .app-sidebar .brand-icon::before,
    .app-sidebar .brand-icon::after,
    .ai-logo,
    .ai-logo-halo,
    .ai-logo-orbit,
    .ai-logo-ring,
    .ai-logo-nodes,
    .ai-logo-core {
        animation: none;
    }
}

/* ---------- Layout shell ---------- */

.app-shell {
    display: flex;
    min-height: 100vh;
}

.app-sidebar {
    width: var(--app-sidebar-width);
    background: linear-gradient(165deg, var(--app-primary-strong) 0%, #2c2470 55%, #241d5c 100%);
    color: #fff;
    position: sticky;
    top: 0;
    height: 100vh;
    padding: 22px 16px;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.app-sidebar .brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: .01em;
    padding: 6px 10px 0;
}

.app-sidebar .brand-icon {
    width: 34px;
    height: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, .14);
    border-radius: 11px;
    font-size: 1.1rem;
}

.app-sidebar .menu {
    margin-top: 26px;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.app-sidebar .menu a {
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, .74);
    text-decoration: none;
    padding: 11px 14px;
    border-radius: var(--app-radius-sm);
    font-size: .925rem;
    font-weight: 500;
    transition: background var(--app-transition), color var(--app-transition), transform var(--app-transition);
    position: relative;
}

.app-sidebar .menu a i {
    font-size: 1.05rem;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

.app-sidebar .menu a:hover {
    background: rgba(255, 255, 255, .08);
    color: #fff;
}

.app-sidebar .menu a.active {
    background: rgba(255, 255, 255, .16);
    color: #fff;
}

.app-sidebar .menu a.active::before {
    content: "";
    position: absolute;
    left: -16px;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 20px;
    border-radius: 0 4px 4px 0;
    background: var(--app-accent);
}

.app-sidebar .sidebar-footer {
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, .12);
    display: flex;
    align-items: center;
    gap: 10px;
}

.app-sidebar .user-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .16);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: .95rem;
    flex-shrink: 0;
}

.app-content {
    flex: 1;
    padding: 22px 26px 40px;
    min-width: 0;
}

.app-topbar {
    background: rgba(255, 255, 255, .9);
    backdrop-filter: blur(10px);
    border: 1px solid var(--app-border);
    border-radius: var(--app-radius-lg);
    padding: 16px 22px;
    margin-bottom: 22px;
    box-shadow: var(--app-shadow-sm);
}

.app-topbar h1 {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ---------- Surfaces ---------- */

.card-surface {
    border: 1px solid var(--app-border);
    border-radius: var(--app-radius-lg);
    box-shadow: var(--app-shadow);
    background: var(--app-surface);
}

.section-title {
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-title .icon-badge {
    width: 34px;
    height: 34px;
}

.icon-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 10px;
    background: var(--app-primary-soft);
    color: var(--app-primary);
    flex-shrink: 0;
}

.icon-badge.accent { background: rgba(20, 184, 166, .12); color: #0f8f80; }
.icon-badge.danger { background: rgba(225, 29, 72, .1); color: var(--app-danger); }
.icon-badge.warning { background: rgba(217, 119, 6, .1); color: var(--app-warning); }

.metric-card {
    min-height: 128px;
    background: var(--app-surface);
    transition: transform var(--app-transition), box-shadow var(--app-transition);
}

.metric-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 30px rgba(31, 41, 55, .09);
}

.metric-card .metric-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--app-primary-soft);
    color: var(--app-primary);
    font-size: 1.15rem;
}

.metric-value {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -.02em;
}

/* ---------- Buttons ---------- */

.btn {
    border-radius: var(--app-radius-sm);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    transition: transform var(--app-transition), box-shadow var(--app-transition), background var(--app-transition), border-color var(--app-transition), opacity var(--app-transition);
}

.btn i {
    font-size: 1em;
    line-height: 1;
}

.btn-primary {
    background: var(--app-primary);
    border-color: var(--app-primary);
}

.btn-primary:hover,
.btn-primary:focus {
    background: var(--app-primary-strong);
    border-color: var(--app-primary-strong);
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

.btn.is-loading {
    pointer-events: none;
    opacity: .75;
}

.btn.is-loading::before {
    content: "";
    width: 13px;
    height: 13px;
    border-radius: 50%;
    border: 2px solid currentColor;
    border-right-color: transparent;
    animation: btn-spin .6s linear infinite;
    margin-right: 2px;
}

@keyframes btn-spin {
    to { transform: rotate(360deg); }
}

/* ---------- Forms ---------- */

.form-control,
.form-select {
    border-radius: var(--app-radius-sm);
    border-color: var(--app-border);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--app-primary);
    box-shadow: 0 0 0 .2rem rgba(79, 70, 229, .14);
}

.form-label {
    font-size: .84rem;
    font-weight: 600;
    color: #384154;
    margin-bottom: 5px;
}

.form-check-input:checked {
    background-color: var(--app-primary);
    border-color: var(--app-primary);
}

/* ---------- Tables ---------- */

.table thead th {
    background: #f7f8fc;
    font-size: .78rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--app-muted);
    font-weight: 600;
    border-bottom-width: 1px;
}

.table > :not(caption) > * > * {
    padding: .7rem .85rem;
}

.table tbody tr {
    transition: background var(--app-transition);
}

.table tbody tr:hover {
    background: #f9fafc;
}

.badge {
    font-weight: 600;
    letter-spacing: .01em;
    border-radius: 999px;
    padding: .4em .7em;
}

/* ---------- Alerts ---------- */

.alert {
    border: 1px solid transparent;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ---------- Chat / Playground ---------- */

.chat-window {
    background: #eef1f7;
    border-radius: var(--app-radius-lg);
    border: 1px solid var(--app-border);
    min-height: 640px;
    overflow: hidden;
}

.chat-messages {
    background-image: radial-gradient(rgba(79, 70, 229, .05) 1px, transparent 1px);
    background-size: 18px 18px;
    min-height: 420px;
    max-height: 420px;
    overflow-y: auto;
    padding: 16px 8px 10px;
}

.chat-bubble {
    border-radius: 14px;
    padding: 11px 14px;
    margin-bottom: 10px;
    max-width: 85%;
    box-shadow: var(--app-shadow-sm);
    position: relative;
    line-height: 1.42;
}

.chat-bubble.user {
    background: var(--app-primary);
    color: #fff;
    margin-left: auto;
    border-bottom-right-radius: 4px;
}

.chat-bubble.bot {
    background: #ffffff;
    border-bottom-left-radius: 4px;
}

.bubble-time {
    font-size: .7rem;
    opacity: .65;
    text-align: right;
    margin-top: 4px;
}

.prompt-preview {
    white-space: pre-wrap;
    background: #12162a;
    color: #dce3f5;
    border-radius: var(--app-radius-md);
    padding: 16px;
    font-size: .86rem;
    max-height: 420px;
    overflow-y: auto;
}

.whatsapp-topbar {
    background: #fff;
    border-bottom: 1px solid var(--app-border);
    border-top-left-radius: var(--app-radius-lg);
    border-top-right-radius: var(--app-radius-lg);
}

.whatsapp-input {
    background: #fff;
    border-top: 1px solid var(--app-border);
    border-bottom-left-radius: var(--app-radius-lg);
    border-bottom-right-radius: var(--app-radius-lg);
}

/* ---------- Scrollbars ---------- */

.chat-messages::-webkit-scrollbar,
.prompt-preview::-webkit-scrollbar {
    width: 8px;
}

.chat-messages::-webkit-scrollbar-thumb,
.prompt-preview::-webkit-scrollbar-thumb {
    background: rgba(79, 70, 229, .25);
    border-radius: 8px;
}

/* ---------- Empty states ---------- */

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--app-muted);
}

.empty-state i {
    font-size: 2.2rem;
    color: var(--app-primary);
    opacity: .5;
    margin-bottom: 10px;
    display: block;
}

/* ---------- Responsive ---------- */

@media (max-width: 991px) {
    .app-shell {
        flex-direction: column;
    }

    .app-sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }

    .app-content {
        padding: 16px;
    }
}